If you crash when you open flyff v14 or go to log in or to create a character first try redownloading the patch make sure all files are installed then if it still don't work make sure there is no file called Flyff.a in your flyff folder if there is DELETE IT this will fix a lot of bugs in game.

PS: Any other bugs just pm me on forums or tell me in chat and i will see what's wrong and do all i can to fix it.